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Path: utzoo!mnetor!seismo!rutgers!cbmvax!grr
From: grr@cbmvax.cbm.UUCP (George Robbins)
Newsgroups: comp.sys.amiga
Subject: Re: using timer interrupts - HELP!
Message-ID: <1751@cbmvax.cbmvax.cbm.UUCP>
Date: Sat, 25-Apr-87 22:33:15 EDT
Article-I.D.: cbmvax.1751
Posted: Sat Apr 25 22:33:15 1987
Date-Received: Sun, 26-Apr-87 22:32:47 EDT
References: <701@sask.UUCP>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 18
Keywords: arghhhhh

In article <701@sask.UUCP> hardie@sask.UUCP (Peter Hardie ) writes:
>
>Is there a kind soul out there who knows how to use the interrupt
>system to catch 8520 timer interrupts? Spercifically, I want to be able 
>to have a program that is interrupted 400-500 times a second and during
>the interrupt have a quick look at the parallel port
>and plot a couple of points in a bitmap.

	Can you explain more about what you are trying to do?  That seems
	like an extremely high interrupt rate for a non-dedicated system.

	It might be better to use the PC input to cause an interrupt when
	your external status changes, rather than watch it constantly.

-- 
George Robbins - now working for,	uucp: {ihnp4|seismo|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@seismo.css.GOV
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)